Card guard



FIG. 1 is a front perspective view of the card guard with slight rotation of the encircled disk out of plane with the circular perimeter;

FIG. 2 is a front view of the card guard with the encircled disk rotated in plane with the circular perimeter; and,

FIG. 3 is a side view of the of the card guard with the encircled disk rotated in plane with the circular perimeter.

The broken line showing is for illustrative purposes only, and forms no part of the claimed design. 

The ornamental design for a card guard, as shown and described. 